Most multivitamins contain both vitamins C and D, so most individuals shouldn't have any issues taking both simultaneously. However, before taking supplements if you're at risk for kidney stones, talk to your doctor. Your risk of kidney stones can increase if you consume high doses of calcium, vitamin D, and vitamin C. If you're unsure about whether you ought to take vitamin supplements or which ones are best for you, go to your doctor.
Do you need to take a vitamin every day? What about iron, zinc, or vitamin D supplements? Find out the advantages and disadvantages of taking dietary supplements and vitamins.